| /* |
| * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. |
| * |
| * Permission to use, copy, modify, and/or distribute this software for |
| * any purpose with or without fee is hereby granted, provided that the |
| * above copyright notice and this permission notice appear in all |
| * copies. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| * PERFORMANCE OF THIS SOFTWARE. |
| */ |
| |
| #ifndef __OSIF_VDEV_SYNC_H |
| #define __OSIF_VDEV_SYNC_H |
| |
| #include "linux/device.h" |
| #include "linux/netdevice.h" |
| #include "qdf_types.h" |
| |
| /** |
| * struct osif_vdev_sync - opaque synchronization handle for a vdev |
| */ |
| struct osif_vdev_sync; |
| |
| /** |
| * osif_vdev_sync_create() - create a vdev synchronization context |
| * @dev: parent device to the vdev |
| * @out_vdev_sync: out parameter for the new synchronization context |
| * |
| * Return: Errno |
| */ |
| qdf_must_check int |
| osif_vdev_sync_create(struct device *dev, |
| struct osif_vdev_sync **out_vdev_sync); |
| |
| /** |
| * osif_vdev_sync_create_and_trans() - create a vdev synchronization context |
| * @dev: parent device to the vdev |
| * @out_vdev_sync: out parameter for the new synchronization context |
| * |
| * For protecting the net_device creation process. |
| * |
| * Return: Errno |
| */ |
| #define osif_vdev_sync_create_and_trans(dev, out_vdev_sync) \ |
| __osif_vdev_sync_create_and_trans(dev, out_vdev_sync, __func__) |
| |
| qdf_must_check int |
| __osif_vdev_sync_create_and_trans(struct device *dev, |
| struct osif_vdev_sync **out_vdev_sync, |
| const char *desc); |
| |
| /** |
| * osif_vdev_sync_destroy() - destroy a vdev synchronization context |
| * @vdev_sync: the context to destroy |
| * |
| * Return: none |
| */ |
| void osif_vdev_sync_destroy(struct osif_vdev_sync *vdev_sync); |
| |
| /** |
| * osif_vdev_sync_register() - register a vdev for operations/transitions |
| * @net_dev: the net_device to use as the operation/transition lookup key |
| * @vdev_sync: the vdev synchronization context to register |
| * |
| * Return: none |
| */ |
| void osif_vdev_sync_register(struct net_device *net_dev, |
| struct osif_vdev_sync *vdev_sync); |
| |
| /** |
| * osif_vdev_sync_unregister() - unregister a vdev for operations/transitions |
| * @net_dev: the net_device originally used to register the vdev_sync context |
| * |
| * Return: the vdev synchronization context that was registered for @net_dev |
| */ |
| struct osif_vdev_sync *osif_vdev_sync_unregister(struct net_device *net_dev); |
| |
| /** |
| * osif_vdev_sync_trans_start() - attempt to start a transition on @net_dev |
| * @net_dev: the net_device to transition |
| * @out_vdev_sync: out parameter for the synchronization context registered with |
| * @net_dev, populated on success |
| * |
| * Return: Errno |
| */ |
| #define osif_vdev_sync_trans_start(net_dev, out_vdev_sync) \ |
| __osif_vdev_sync_trans_start(net_dev, out_vdev_sync, __func__) |
| |
| qdf_must_check int |
| __osif_vdev_sync_trans_start(struct net_device *net_dev, |
| struct osif_vdev_sync **out_vdev_sync, |
| const char *desc); |
| |
| /** |
| * osif_vdev_sync_trans_start_wait() - attempt to start a transition on |
| * @net_dev, blocking if a conflicting transition is in flight |
| * @net_dev: the net_device to transition |
| * @out_vdev_sync: out parameter for the synchronization context registered with |
| * @net_dev, populated on success |
| * |
| * Return: Errno |
| */ |
| #define osif_vdev_sync_trans_start_wait(net_dev, out_vdev_sync) \ |
| __osif_vdev_sync_trans_start_wait(net_dev, out_vdev_sync, __func__) |
| |
| qdf_must_check int |
| __osif_vdev_sync_trans_start_wait(struct net_device *net_dev, |
| struct osif_vdev_sync **out_vdev_sync, |
| const char *desc); |
| |
| /** |
| * osif_vdev_sync_trans_stop() - stop a transition associated with @vdev_sync |
| * @vdev_sync: the synchonization context tracking the transition |
| * |
| * Return: none |
| */ |
| void osif_vdev_sync_trans_stop(struct osif_vdev_sync *vdev_sync); |
| |
| /** |
| * osif_vdev_sync_assert_trans_protected() - assert that @net_dev is currently |
| * protected by a transition |
| * @net_dev: the net_device to check |
| * |
| * Return: none |
| */ |
| void osif_vdev_sync_assert_trans_protected(struct net_device *net_dev); |
| |
| /** |
| * osif_vdev_sync_op_start() - attempt to start an operation on @net_dev |
| * @net_dev: the net_device to operate against |
| * @out_vdev_sync: out parameter for the synchronization context registered with |
| * @net_dev, populated on success |
| * |
| * Return: Errno |
| */ |
| #define osif_vdev_sync_op_start(net_dev, out_vdev_sync) \ |
| __osif_vdev_sync_op_start(net_dev, out_vdev_sync, __func__) |
| |
| qdf_must_check int |
| __osif_vdev_sync_op_start(struct net_device *net_dev, |
| struct osif_vdev_sync **out_vdev_sync, |
| const char *func); |
| |
| /** |
| * osif_vdev_sync_op_stop() - stop an operation associated with @vdev_sync |
| * @vdev_sync: the synchonization context tracking the operation |
| * |
| * Return: none |
| */ |
| #define osif_vdev_sync_op_stop(net_dev) \ |
| __osif_vdev_sync_op_stop(net_dev, __func__) |
| |
| void __osif_vdev_sync_op_stop(struct osif_vdev_sync *vdev_sync, |
| const char *func); |
| |
| /** |
| * osif_vdev_sync_wait_for_ops() - wait until all @vdev_sync operations complete |
| * @vdev_sync: the synchonization context tracking the operations |
| * |
| * Return: None |
| */ |
| void osif_vdev_sync_wait_for_ops(struct osif_vdev_sync *vdev_sync); |
| |
| #endif /* __OSIF_VDEV_SYNC_H */ |
| |